jouclard



may 5, 1925.

J. JOUCLARD 6 Sheets-She Filed April 25. 1923 May 59 2925. 153mm J. JQUCLARD STOVE FOR BURNING SAWDUST AND LIKE RESIDUES Filed April 25. 1923 6 Sheets-Sheet 2 My 5, m5. 153mm J. JOUC LARD STOVE FOR BiJRNINQ SAWDUST AND LIKE RESIDUES Filed April 25. 1923 6 Sheets-Sheet 4 3-. k 1 1|] r 1 I A m B May 5 15. L5362 J. JOUCLARD STOVE FOR BURNING SAWDUST AND LIKE RESIDUES Filed April 25. 1923 6 Sheets-Sheet 5 msm J. JOUCLLAR I STOVE FOR BURNING SAWDUS'I' Am) LIKE RESIDUES may 5,, 1925.-

Filed April 25, 1923- 6 Sheets-Shaw 6 lllll l var-i. May 5,

111:1) STATES JULES JOUCLARD, OF VERSAILLES, FRANCE.

STOVE non; BURNING sawnns'r AND LIKE ansrnuns.

Application filed April 25, 1923. Serial No. 634,516.

To all whom it may 00mm:

Be it known that I, JULES JOUCLARD, a citizen of France, and a resident of Versailles, Seine-et-Oise Department, France, have invented new and useful Improvements in Stoves for Burning Sawdust and like Residues, which are fully set forth in the following specification.

In my United States Patent No. 1,428,782 I described a stove for burning sawdust and like residues, in which the internal chamber contained various projecting or other elements bounded by vertical grate bars, and a vertical chimney likewise formed of grate bars which is disposed at the middle of the chamber, the said chimney being in certain modifications replaced by a transverse conduit or apertured andiron having a diametrical position upon the bottom of the stove.

The present invention relates to a stove of this kind and comprises the following improvements:

1. A grate holder disposed at the lower part of the apparatus.

.2. A horizontal grate having an aperture at the centre for the admission of the draught into the ap aratus and for the discharge of foreign odies contained in the sawdust.

3. A grate element having the form of a cone, a cocked hat or a star with various branches, which is disposed at the middle of the horizontal grate.

4. A draught pipe whose air inlet is be low the ash-pit traversesthe centre of the grate holder and the horizontal grate in order to admit the air within and at the top of the said conical grate element.

5. A vertical cylindrical or corrugated grate composed of grate sections or elements which are fitted into the groove of the said grate holder and are connected together by eight solid coupling bars servin to attach the elements of the vertical cy indrical or corrugated grate and forming with the latter and with the wall of the furnace chamber various discharge fiues for the gas of combustion.

The above mentioned grate element instead of having a conical form may be replaced by an element whose surface has the form of an inclined andiron.

In a modification, the stove is surrrounded by an annular boiler which may contain.

tubes traversed by the burnt gas.

The following description, together with Fig. 1 is a longitudinal section of the stove.

Fig. 2 is a plan view, with the upper part removed.

Fig. 3 is a view of the grate holder.

Fig. 4 is a section on the line Fig. 3.

Fig. 5 is a view of the lower grate.

Figs. 6 and 7 are respectively front and side views of a couplingbar.

Figs. 8 and 9 are longitudinal and horizontal sections of the stove surrounded by its boiler.

Fig. 10 is a longitudinalsection of a modificatlon.

Fig. 11 is a section on the line ZZ, Fig. 10, showing in plan the grating illustrated in Fig. 5 and the chimneys proceeding to the collector and mounted upon the grate holder, Fig. 12, which forms part of the stove shown in Fig. 10.

Fig. 12, is a View of the grate holder.

Fig. 13 is a longitudinal section of another modification of the stove. I

Fig. 14 is .a section on the line Y-Y, Fig. 13, the device being provided with a different drau ht-grate.

Figs. 15 an 16 are modifications of the draught grate- Fig. 17 is aplan view of the grate holder.

.Fig. 18 is a plan view of the top cover of the grates of the stove illustrated in Fig. 13.

Fig. 19 is a view of one of the coupling bars of the stove shown in Fig. 13.

Ih'g. 19 is a vertical section of the upper portion of Fig. 19.

Fig. 20 illustrates in section and Fig. 20 in plan a circular horizontal grate of the pivoted type which is made in three parts.

The embodiment shown in Figs. 1 to 7 is an improvement on the device illustrated in Fig. 3 of my Patent No. 1,428,7 82.

Within the cylindrical main-body a of the stove is disposed at the lower part a grate holder A, Fig. 3, having the groove A and a plurality of lugs A which latter are radially grooved as shown in Fig. 4 and are supported b the brackets B secured to the internal wal of the stove, Fig. 1. At the centre of the grate holder is either a rod C .conical which serves. for pivoting purposes or an air pipe I which conducts the air within the conical grate element and to the upper part of the same.

Upon the said grate holder is disposed the flat grate c which is shown in plan in Fig. 5; it is rovided at the middle with an aperture for 518 air draught as well as forthe dischar of foreign substances mixed with the saw ust. In the circular groove A of the grate holder are disposed the sections of a cylindrical vertical grate f which are connected together by the coupling bars D, Figs. 6 and 7, having the slot D engaging the top of the said grate f and whereof the footD is supported in the groove D of the grate holder lugs A.

At the centre of the stove is disposed the pivot r C or upon the said air pipe Z of the conical grate element. A solid drum F is securedto the upper cover of the stove and consistsof a cast or plate iron cylinder of somewhat smaller diameter than the cylindrical ate f and descends as far as the top of said 0 lmdrical grate, forming with the outer wall which the said coupling bars which stop at different heights as observed in Fig. 1 divide into various flues for the flow of the gases of combustion according tothe arrows, Fi 1, the ses being collected in the main col ecting c amber i and escaping through theipe k. l a

T e said collecting chamber is disposed within the stove and not outside the same as in the prior patent, and it is so arranged as to be flush with the inside and without any projecting parts, thus enabling the fuel to descend properlyin the drum F.

A receptacle b is disposed outside the stove and contains a supply of fuel which is fed downwardly as the combustion takes place; The various elements-of the stove are assembled by means of asbestos ackin whereby leakage of gas and air is. obviate .One may increase the'distance between the drum and the oiiter wall of the stove so that the space may contain a water boiler G, Figs. 8 and 9, comprising the tubes G in which are circulated the gas and smoke ac.-

' cording to the arrows, Fig. 8, and in this case the discharge pipe or chimney k and the gas collector are disposed at the lower part of the stove.

The arrangement of the eight coupling bars is such that the spaces formed between these bars, the outer wall of the stove, the cylindrical vertical grate and the feeding device will constitute veritable smoke flues so that the fuel can burn throughout the said cylindrical grate but without affecting the upper layers of the fuel. Since the, draught takes place from the inside tothe outside of the furnace, the air entering the said conate element F fitting upon said of the stove an annular space ical grate element through the adjustable inlets m disposed below'the ash pit m Fig. 13, will pass th'roughthe fuel and will be discharged into the flues through the cylindrical vertical grate.

The stove is sup lied by means of the fuel which is contained in the superposed p lindrical receptacles F and b. As the fue descends into the furnace portion it is dried and heated, and it commences to burn when in contact with the burfiing fuel upon the lowergrate. In this manner a continuous heating is obtained, and the rate .of combustion will depend upon the amount of air admitted by the regulating elements.

In the modification shown in Figs. 10 to 12, the cylindrical grate f is replaced as in Fig. 1 of the prior patent b eight semicIyq'hndrical-grate elements f isposed upon t e internal face of the stove. In this case the grate holder A has the form represented in Fig. 12, .and the bottom grate resembles the grate c of Fig. 5. Each grate element f forms a small chimney communicating with the main collector i in which the gases of combustion are collected before their discharge through the chimney is. At the middle is provided a ate element j having the form of an inc ined 'apertured andiron, through which the draug t passes. An air inlet pipe I traverses the centre of the ash pit and conducts the air to the upper part of the interior of the said element. The latter may also be given a conical shape as represented at E, Fig. -1.

In the embodiment shown in Figs. 13 to 20", the stove comprises a corrugated vertical grate element 1, Fig. 14, in which the burningfuel cannot come into direct contact with the plate iron= of the stove, while at the same time preserving the arrangement of the ten gas discharge chimneys. The conical grate element E in Fig. 13 also has a greater draftsurface than in Fig. 1. The

said element can be replaced by an element having the shape of a cocked hat, Fig. 16,

or by an element-having radialparts of a general star shape, for instance with three through the great number of channels which are formed in the burnin said arrangement will pr heating effect.

According as it is desired to obtain from fuel, so that the uce the maximum In this manner the coinbustion y and has the slots 9 engaging the ends 10 neeaaao a given apparatus a very moderate heat which serves for the heating of a room or to produce an average temperature, or in other cases to obtain a consi arable yield in the case of a steam boiler for central heat ing purposes, orfurther, for burning household waste, one disposes in the apparatus a grate element having a conical form, or the form of a cooked hat, or a rosette form, as desired.

In the modification shown in Fig. I3, the stove as for Fig. 8 is surrounded by an annular boiler 2, but the burnt gas instead of traversing the boiler is now made to pass around it, according to the arrows, so as to heat both sides of the boiler, thus increasing the heating surface. The coupling bars I) which subdivide the space so as to form discharge flues have the form shown in Fi s. 19 and 19 and are placed upon the top the annular boiler 2. The said boiler is provided with a filling aperture 3 and an emptying orifice 4: which may be of any suitable nature. A water gauge 5 can also be provided.

In this embodiment, the upper part of the vertical grate 1 is'covered and secured in place by an up er supporting member 6 whose form is s own in Fig. 18, it being provided with the grooves 7- engaging the ends 8 of the coupling bars D*, Fig. 19. The grate holder is represented in Fig. 17,

of the said bars. The inner horizontal grate, Figs. and 20, may be made in three parts 11, 12, 13 and by pivoting on the two trun nions 14, 15 it can overturn into the ash pit so. as to discharge any foreign bodies contained in the sawdust.

Obviously, the said arrangements are sueceptible of modifications in detail without departing from the principleof the inven tion.

atl claim is:

1. A stove for burning sawdust and like residues, comprisinga cylindrical main body, a horizontal grate disposed at the lower part thereof, vertical grates surrounding the cylindrical central portion forming the furnace, a cylindrical partition extending from the top of the cylindrical main body to the top of the said vertical grates and providin or the continuous downward feed of the uel, an annular space between the said vertical grates and the external cylindrical main body forming a collector for the burnt gas, an inclined grate disposed upon the said horizontal ate in order to augment the surface of t e burning fuel,

by the vertical grates are extended to the top of the stove, means for feeding the stove which are adapted to fit upon the top of the said partition, inclined grates disposed upon the horizontal grate, means for supplying the stove with air whose outlet is situated below the said inclined grates, partitions subdividing the annular space between the vertical grates and the external envelope oi the stove in order to form fines for the discharge of burnt gas.

3. A stove for burning sawdust and like residues, comprising a cylindrical external envelope, a cover thereupon, a grate holder disposed at the lower part of said envelope, a horizontal grate disposed upon the said grate holder, vertical grates forming cylinders with corrugated walls and surrounding the central part, inclined grates having the form of a star with various branches mounted upon the horizontal grate-within the vertical grates, an internal partition se-- externalenvelope in order to form discharge 1 flues for the burnt gas, an annular cylindrical envelope disposed in the said annular s ace and adapted to contain water and to t us constitute a boiler, a collector for the burnt gas disposed at the lower part of the stove, and a discharge pipe connected to the said collector.

'In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JULES Jooomnn.

Witnesses Ramona Eoxnn, J umor Domnn'r. 

